CN107565677A - A kind of more bus high-power power-supply controller of electric - Google Patents
A kind of more bus high-power power-supply controller of electric Download PDFInfo
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- CN107565677A CN107565677A CN201710735657.6A CN201710735657A CN107565677A CN 107565677 A CN107565677 A CN 107565677A CN 201710735657 A CN201710735657 A CN 201710735657A CN 107565677 A CN107565677 A CN 107565677A
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Abstract
The present invention proposes a kind of more bus high-power power-supply controller of electric, including N number of PCU modules, the two-way DC DC converters of N 1.Wherein, the PCU modules use three Port Translation devices, first port connection solar battery array, second port connection battery, the 3rd port connection bus.Battery in each PCU modules is connected by the battery in two-way DC DC converters PCU modules adjacent thereto, and the bus in each PCU modules connects also by the bus in two-way DC DC converters PCU modules adjacent thereto.The present invention realizes 5 10 times bigger than existing power level of sun-generated electric power controller system by the interconnection of each PCU modules.
Description
Technical field
The invention belongs to power-supply controller of electric technical field, and in particular to a kind of high-power power-supply controller of electric.
Background technology
For large power supply controller PCU of the busbar voltage more than 100V, if being continuing with parallel regulator
SR structures are higher to the design requirement of solar battery array, and need when shunting the transient current that undertakes bigger, to power tube
Conducting electric current and the requirement such as pressure-resistant are higher.Although the efficiency of SR flow dividing structures is higher, using the PCU power densities of this system
Low, module number is more.
And inventor's (China Patent Publication No. in patent document 1：CN104518672A) propose a kind of magnetic it is integrated with
The three Port Translation devices (referred to as " B3C topology ") that current ripples are offset, using integrated magnetic, reduce the quantity of magnet ring,
Reduce the number of driving coupling transformer, greatly reduce volume, the weight of complete machine；Branch is offset using current ripples
Road so that the current ripples very little that three ports flow through, is approximately zero.Three Port Translation devices of the invention reduce electromagnetic interference shadow
Ring, while save filtering cost so that bus current, battery current are gentler.
The content of the invention
To solve problems of the prior art, the present invention proposes a kind of more bus high-power power supplies
Device, the sun-generated electric power controller system realized than existing big 5-10 times of power level is interconnected by each PCU modules.
The present invention realizes especially by following technical scheme：
A kind of more bus high-power power-supply controller of electric, including N number of PCU modules, N-1 bidirectional DC-DC converter；Its
In, the PCU modules use three Port Translation devices, first port connection solar battery array, second port connection battery, the 3rd end
Mouth connection bus；Battery in each PCU modules passes through the electricity in bidirectional DC-DC converter PCU modules adjacent thereto
Pond connects, and the bus in each PCU modules is also by the bus in bidirectional DC-DC converter PCU modules adjacent thereto
Connection.
Further, the bidirectional DC-DC converter is that the bi-directional DC-DC of the input and the output that can adapt to wide scope becomes
Parallel operation.
Further, the bus connection load of the PCU modules, the power demands of load are realized；When corresponding PCU modules
Do not have then to supplement energy to battery by the two-way DC/DC converters during energy or powered directly to load.
Further, the high-power power-supply controller of electric, the battery in illumination period, certain PCU module receive to come from
The charging current of corresponding three Port Translations device, while the battery for being also possible to receive in adjacent PCU modules is converted by two-way DC/DC
Device is the charging current of its offer or provides charging current by two-way DC/DC converters for the battery in adjacent PCU modules.
Further, the high-power power-supply controller of electric, battery passes through corresponding three in shadow region, certain PCU module
Port Translation device electric discharge powering load, while the battery for being also possible to receive in adjacent PCU modules is carried by two-way DC/DC for it
The charging current of confession provides charging current by two-way DC/DC converters for the battery in adjacent PCU modules.
Brief description of the drawings
Fig. 1 is the topology diagram of more bus high-power power-supply controller of electric of the present invention.
Embodiment
The present invention is further described for explanation and embodiment below in conjunction with the accompanying drawings.
Inventor has found that, for solving the problems, such as to mention in background technology, the B3C topologys in patent document 1 are very suitable
, including three ports, one end connection solar battery array in a topology, one end connects battery, and the other end connects bus,
, can be real namely a module realizes two kinds even function of three kinds of modules under SR frameworks in S3R+BCDR or S4R+BDR schemes
Existing high power density.
21kW can be achieved in the lower peak power of B3C topologys at present, then it is contemplated that N number of small-power grade (such as 10kW or
PCU 20kW) is by interconnecting the sun-generated electric power controller system realized than existing big 5-10 times of power level, as shown in Figure 1.
Each PCU modules are equipped with the load quota of certain power for it, the power demands of load are realized, as corresponding PCU
Module does not have that energy can be supplemented to battery by two-way DC/DC converters during energy or powered directly to load, respectively corresponding diagram 1
Middle bold portion and dotted portion.
Within the system, the independent stable bus of each PCU modules configuration, can the conversion of complete independently solar energy, battery charge and discharge
Electricity, load power supply.Current B3C topologys can support 100V busbar voltages, can be directly extended to 300V, without increasing newly
Circuit or transformation topology scheme, it is only necessary to use the power device of voltage levels.
In Fig. 1, corresponding bold portion is that the battery of each PCU modules is connected.The battery that each PCU modules are equipped with is one
Battery strings, do not consider equilibrium, and single-unit failure then directly bypasses.When the battery interconnection of each PCU modules, two-way DC/DC conversion
Device is responsible for charging to the low battery of electricity, and possibility boosting may also be depressured, and cell voltage difference possibility is larger may also be smaller, that
It is required that two-way DC/DC converters can adapt to the input and output of wide scope.For the battery being electrically charged, on the one hand connect
By the rechargeable electrical energy from two-way DC/DC converters, on the other hand discharged to load by B3C topologys, or may also connect simultaneously
By the charging current from B3C topologys, or by two-way DC/DC converters battery discharge is closed on to it.
And when the bus interconnection of each PCU modules, be then not in multivoltage because demand module type is as few as possible
Bus-bar system, that is, the output voltage grade of each PCU modules are consistent, but can due between device parameters difference cause respectively
There is certain difference in PCU module busbar voltages, thus the voltage differences at the possible both ends of two-way DC/DC converters are smaller, simultaneously
Also to meet to carry out powerful power conversion when a certain PCU module for power supply demand is unsatisfactory for carry out energy scheduling.
For battery interconnection and bus interconnect both modes, there is its advantage and disadvantage.In the case of battery interconnects,
Battery in illumination period, certain PCU module receives the charging current from corresponding B3C, while is also possible to receive adjacent PCU modules
In battery be its charging current for providing by two-way DC/DC converters or by two-way DC/DC converters be adjacent PCU
Battery in module provides charging current；Battery is gone back simultaneously by B3C electric discharge powering loads in shadow region, certain PCU module
The battery that may receive in adjacent PCU modules becomes by two-way DC/DC for the charging current of its offer or by two-way DC/DC
Parallel operation provides charging current for the battery in adjacent PCU modules.Consider from standpoint of efficiency, if the battery of a PCU module is not
It is enough in the case of being powered for load, the battery that the electric energy of adjacent PCU modules first must be given in this module charges, then passes through B3C
Discharge and powered to load, efficiency is low.And interconnect and say for bus, when the energy deficiency of some PCU module, adjacent PCU moulds
Block directly can be powered by one-stage transfor-mation to load, efficiency high, but two-way DC/DC converters failure may directly result in two
The forfeiture of PCU modular loads power supply.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (5)
- A kind of 1. more bus high-power power-supply controller of electric, it is characterised in that：The power-supply controller of electric include N number of PCU modules, N-1 bidirectional DC-DC converter；Wherein, the PCU modules use three Port Translation devices, and first port connects solar battery array, Second port connects battery, the 3rd port connection bus；Battery in each PCU modules passes through the bidirectional DC-DC converter Battery connection in PCU modules adjacent thereto, bus in each PCU modules also by the bidirectional DC-DC converter with Bus connection in its adjacent PCU module.
- 2. power-supply controller of electric according to claim 1, it is characterised in that：The bidirectional DC-DC converter is that can adapt to The bidirectional DC-DC converter of input and the output of wide scope.
- 3. power-supply controller of electric according to claim 1 or 2, it is characterised in that：The bus connection load of the PCU modules, Realize the power demands of load；Then mended when corresponding PCU modules do not have energy by the two-way DC/DC converters to battery Fill energy or powered directly to load.
- 4. power-supply controller of electric according to claim 3, it is characterised in that：The power-supply controller of electric is in illumination period, certain PCU mould Battery in block receives the charging current from corresponding three Port Translations device, while is also possible to receive the electricity in adjacent PCU modules Pond is its charging current for providing by two-way DC/DC converters or by two-way DC/DC converters is in adjacent PCU modules Battery provide charging current.
- 5. power-supply controller of electric according to claim 3, it is characterised in that：The power-supply controller of electric is in shadow region, certain PCU mould Battery is by corresponding three Port Translations device electric discharge powering load in block, while is also possible to receive the battery in adjacent PCU modules It is its charging current for providing by two-way DC/DC or is that battery in adjacent PCU modules carries by two-way DC/DC converters For charging current.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710735657.6A CN107565677B (en) | 2017-08-24 | 2017-08-24 | Multi-bus high-voltage high-power supply controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710735657.6A CN107565677B (en) | 2017-08-24 | 2017-08-24 | Multi-bus high-voltage high-power supply controller |
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| CN107565677A true CN107565677A (en) | 2018-01-09 |
| CN107565677B CN107565677B (en) | 2020-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233421A (en) * | 2018-02-05 | 2018-06-29 | 华为技术有限公司 | Photovoltaic generating system and photovoltaic electric power distribution |
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| CN102208825A (en) * | 2011-06-10 | 2011-10-05 | 西安工业大学 | Solar photovoltaic power generation system with energy networking function |
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| JP2015027210A (en) * | 2013-07-29 | 2015-02-05 | 株式会社 日立産業制御ソリューションズ | Parallel-type power supply |
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2017
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| CN102208825A (en) * | 2011-06-10 | 2011-10-05 | 西安工业大学 | Solar photovoltaic power generation system with energy networking function |
| CN102231544A (en) * | 2011-06-28 | 2011-11-02 | 中国科学院广州能源研究所 | External battery pack type electricity-supplement balancing system and method of energy storage system |
| JP2015027210A (en) * | 2013-07-29 | 2015-02-05 | 株式会社 日立産業制御ソリューションズ | Parallel-type power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233421A (en) * | 2018-02-05 | 2018-06-29 | 华为技术有限公司 | Photovoltaic generating system and photovoltaic electric power distribution |
| US11539212B2 (en) | 2018-02-05 | 2022-12-27 | Huawei Digital Power Technologies Co., Ltd. | Photovoltaic power generation system and photovoltaic power transmission method |
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| Publication number | Publication date |
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| CN107565677B (en) | 2020-07-21 |
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